Dormer Pramet A125 7/32 Inch x 250 mm HSS ST STRAIGHT SHANK EXTRA LONG SERIES DRILL BS 328

Meet the Dormer Pramet A125 7/32 inch x 250 mm HSS straight shank extra long drill — a purpose-built solution for deep-hole metalworking. When reach matters as much as precision, this drill bit delivers true performance from first cut to final hole.

• 118-degree conventional point: A sturdy, easy-to-sharpen tip that starts cleanly, reduces wandering, and maintains accurate hole alignment even in tough alloys.
• Steam oxide finish: A low-friction surface that minimizes gum-up and heat build-up, helping chips evacuate smoothly and protecting the cutting edge during extended use.
• Extra-long length (250 mm): Specifically designed for deep-hole drilling tasks and applications where reach is crucial, reducing tool changes and improving hole consistency on long workpieces.
• Premium HSS material: High-speed steel offers reliable durability across a wide range of metals, including steel, aluminum, and stainless steel, without sacrificing performance in everyday shop jobs.
• Straight shank: Broad compatibility with standard drill chucks and holders ensures stable, true-hole results and effortless setup.
• BS 328 specification: Built to exacting size standards, giving you confidence in interchangeability and precision for professional workloads.

Ideal use scenarios include fabricating thick structural components, drilling deep clearance or through-holes in machinery housings, and tackling automotive or industrial brackets where standard-length bits can’t reach. This drilling solution is especially valuable in workshops that demand repeatable hole quality across long or recessed workpieces.

Practical tips for best results:

• Use a light cutting oil or coolant when drilling steel or stainless steel to extend tool life and achieve cleaner edges.
• For deep holes, adopt a controlled pecking approach to break up swarf and prevent chip binding; pause periodically to clear the flutes.
• Match your RPM and feed rate to the material — while HSS handles a broad range, steady, moderate feeds minimize premature wear and maintain hole accuracy.

With the Dormer Pramet A125, you’re choosing a drill bit built for longevity, precision, and practical depth-reaching capability. Its combination of a robust 118-degree point, anti-stick steam oxide finish, and extended reach helps you complete demanding metalworking tasks more efficiently, whether you’re in a busy fabrication shop or a home workshop tackling thick metal projects.